/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2c5282;
    --secondary: #4299e1;
    --accent: #f56500;
    --text: #2d3748;
    --text-light: #718096;
    --bg: #ffffff;
    --bg-light: #f7fafc;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent);
}

/* Header */
.site-header {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.main-nav {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 2rem;
}

.nav-brand img {
    height: 72px;
    width: auto;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.nav-link:hover {
    background: var(--bg-light);
    color: var(--primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 4rem 0;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-baseline {
    font-size: 1.25rem;
    opacity: 0.9;
}

.hero-img {
    width: 100%;
    height: auto;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

/* Intro Section */
.intro-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.intro-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
    text-align: center;
}

.intro-content {
    font-size: 1.125rem;
    line-height: 1.8;
}

/* Featured Section */
.featured-section {
    padding: 4rem 0;
}

.featured-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--accent);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

/* Post Cards */
.post-card {
    background: var(--bg);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.post-card-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.post-card:hover .card-image {
    transform: scale(1.05);
}

.post-card-content {
    padding: 1.5rem;
}

.post-card-meta {
    margin-bottom: 1rem;
}

.card-date {
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 500;
}

.post-card-title {
    margin-bottom: 1rem;
}

.post-card-title a {
    color: var(--text);
}

.post-card-title a:hover {
    color: var(--primary);
}

.post-card-excerpt {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.read-more-btn {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: background 0.3s ease;
}

.read-more-btn:hover {
    background: var(--accent);
    color: white;
}

/* Post Article */
.post-article {
    padding: 2rem 0;
}

.post-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

.post-header {
    margin-bottom: 2rem;
}

.post-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.post-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.post-date, .post-category, .post-reading-time {
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 500;
}

.post-thumbnail {
    margin-bottom: 2rem;
}

.post-featured-image {
    width: 100%;
    height: auto;
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

.post-content {
    line-height: 1.8;
    font-size: 1.125rem;
}

.post-content h2, .post-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.post-content p {
    margin-bottom: 1.5rem;
}

.post-content ul, .post-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.post-content li {
    margin-bottom: 0.5rem;
}

.post-content blockquote {
    background: var(--bg-light);
    border-left: 4px solid var(--accent);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0.5rem;
    font-style: italic;
}

.post-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

/* Related Section */
.related-section {
    background: var(--bg-light);
    padding: 4rem 0;
}

.related-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* Post List */
.post-list-section {
    padding: 2rem 0;
}

.post-list-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.page-title {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary);
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

/* Pagination */
.pagination-wrapper {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.pagination-link {
    display: inline-block;
    padding: 0.75rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--text);
    font-weight: 500;
    transition: all 0.3s ease;
}

.pagination-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination-current {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: 2rem;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: var(--text-light);
}

.breadcrumb a:hover {
    color: var(--primary);
}

/* Footer */
.site-footer {
    background: var(--primary);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    margin-bottom: 1rem;
}

.footer-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-menu-link {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.footer-menu-link:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-container {
        grid-template-columns: auto auto;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg);
        border-top: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        box-shadow: var(--shadow);
    }
    
    .nav-menu-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        padding: 2rem 1rem;
        gap: 0;
    }
    
    .nav-link {
        display: block;
        padding: 1rem;
        border-bottom: 1px solid var(--border);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle-open span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .nav-toggle-open span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle-open span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .articles-grid,
    .posts-grid,
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .post-title {
        font-size: 2rem;
    }
    
    .post-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-menu {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .nav-brand img {
        height: 60px;
    }
    
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .post-content {
        font-size: 1rem;
    }
    
    .articles-grid,
    .posts-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .post-card-content {
        padding: 1rem;
    }
}